Barbecued Swan

Bored with burgers, ribs or chicken?
Want a treat to feast upon?
I can recommend you sample
Breast of Windsor Castle swan.

There are two hundred to choose from - 
Better make that one-nine-nine;
For it seems somebody caught one
And decided he would dine.

There's a law against such killing - 
It was once considered treason -
'Cause these swans are all protected;
They're the Queen's, of course, the reason.

Even if they weren't royal,
They don't seem to fit the bill
Of creature you would marinate
And toss upon the grill.

There's been no official comment
On this swan, whose life was wasted,
But Elizabeth, like all of us,
Must wonder how it tasted.